What is a Solution?
It is a homogeneous mixture of 2 or more substances
Example 1 -
If we dissolve sugar in water , it forms a solution
Here, Sugar and Water are called components of the solution
Water is called Solvent and Sugar is called Solute of a solution
Properties of a Solution
- It is a homogeneous mixture
(different particles of the mixture are not visible clearly)
- Particles of the solution are very small
(1 nm or 1/1000000000 meter)
Is Solution only of One Liquid and One Solid?
No,
Solution can contain any state of matter
Example 1 - Gas in Liquid Solution
Aerated Drinks (Cold drinks) contain carbon dioxide (gas) as solute and flavoured water (liquid) as solvent
Example 2 - Liquid in Liquid Solution
Ethyl Alcohol in Water
Example of Gas in Gas Solution
- Air is also a solution (homogeneous mixture of different gases)
Main components are Nitrogen and Oxygen
Other components are present in lesser quantities
Example of Solid in Liquid Solution
- Solution of Salt in Water (Water is solvent, Salt is solute)
- Solution of Sugar in Water (Water is solvent, Sugar is solute)
-
Solution of
Iodine in Alcohol
(Alcohol is solvent,Iodine is Solute)
Properties of a Solution
-
It is a homogeneous mixture
It is a mixture in which different substances are
completely and uniformly mixed together
, it is difficult to distinguish different substances from each other.
-
Particles of the solution are very small
They are less than 1 nm (10 -9 meter) in diameter
These are so small that they can't be seen by naked eyes
-
Particles of Solution do not scatter a beam of light
If light passes through a solution, the particles of the solution don't scatter it; they
do not show Tyndall Effect.
-
Solute Particles cannot be separated by filtration
Solute particles do not settle down
Hence, we can't use filter to separate them
